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我将AngularJS与MongoLab连接起来,并试图更新“用户”集合。
AngularJS资源服务:
angular.module("myApp.services", ["ngResource"])
.constant({
DB_URL: "https://api.mongolab.com/api/1/databases/mydb/collections/users/:id",
API_KEY: "[SOME_RANDOM_KEY]"
})
.factory("UsersService", ["$resource", "DB_URL", "API_KEY", function($resource, DB_URL, API_KEY) {
return $resource(DB_URL, { apiKey: API_KEY, id: "@_id.$oid" }, { update: { method: "PUT" }});
}]);
这是我在尝试更新我的用户集合:
angular.module("myApp", ["myApp.services"])
.controller("AppController", ["$scope", "UsersService", function($scope, UsersService) {
$scope.users = [];
$scope.getAllUsers = function() {
$scope.users = UsersService.query();
};
$scope.updateUser = function(user) { // user: firstName, lastName, email
//delete user._id;
UsersService.update({}, user, function() {
$scope.users = UsersService.query();
console.log("Users updated successfully");
}, function() {
console.log("Some problems updating the user", arguments);
});
};
}]);
当我尝试更新用户信息时,它抛出一个异常,指出:
{ "message" : "cannot change _id of a document old:{ _id: ObjectId('[SOME_RANDOM_KEY]'), firstName: \"Anup\", lastName: \"Vasudeva\", email: \"[email protected]\" } new:{ _id: {}, firstName: \"Anup\", lastName: \"Vasudeva\", email: \"[email protected]\" }"
我是新来的MongoDB,所以我不明白为什么它创建一个空的_新用户实例的id对象?
_id由mongoDB保留,每个collection必须是唯一的,它需要一个标识符。也许你需要提供它,或者至少不要给它一个空的对象? – Richard